1. Department of Pulmonology and Allergy, Hallym University Dongtan Sacred Heart Hospital, Allergy and Clinical Immunology Research Center, Hallym University College of Medicine, Chuncheon, Korea.
2. Department of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Allergy and Clinical Immunology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Dermatology, Inje University Ilsan Paik Hospital, Ilsan, Korea.
5. Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.
6. Department of Internal Medicine, St. Carollo General Hospital, Suncheon, Korea.
7. Department of Dermatology, Dankook University College of Medicine, Cheonan, Korea.
8. Department of Pulmonology, Allergy and Critical Care Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
9. Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea.
10. Department of Internal Medicine, Korea University Medical Center Anam Hospital, Seoul, Korea.
11. Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.
12. Department of Dermatology, Hanyang University Guri Hospital, Guri, Korea.
13. Department of Dermatology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
14. Division of Pulmonology and Allergy, Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Changwon, Korea.
15. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
16. Institute for Evidence-based Medicine, Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea.
17. Department of Dermatology, Hallym University College of Medicine, Seoul, Korea.
18. Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea.
19. Department of Dermatology, Gil Medical Center, Gachon University School of Medicine, Incheon, Korea.
20. Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
21. Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
22. Department of Allergy and Clinical Immunology, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
23. Department of Dermatology, SMG-SNU Boramae Medical Center, Seoul, Korea.
24. Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.
25. Department of Dermatology, College of Medicine, Ewha Womans University, Seoul, Korea.
26. Department of Pediatrics, Korea University College of Medicine, Seoul, Korea.
27. Department of Pediatrics, Eulji General Hospital, Eulji University School of Medicine, Seoul, Korea.
28. Division of Pulmonology and Allergy, Department of Internal Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea.
29. Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
30. Department of Dermatology, School of Medicine, Eulji University, Daejeon, Korea.
31. Department of Dermatology, Seoul St. Mary's Hospital, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, The Catholic University of Korea, Seoul, Korea.
32. Wirye Seoul Doctors Hospital, Seongnam, Korea.
33. Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
34. Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
35. Department of Pediatrics, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
36. Department of Dermatology, Korea University College of Medicine, Seoul, Korea.
37. Department of Dermatology, Veterans Health Service Medical Center, Seoul, Korea.
38. Department of Pediatrics, Kyung Hee University Hospital at Gangdong, School of Medicine, Kyung Hee University, Seoul, Korea.
39. Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
40. Department of Pediatrics, School of Medicine, Inha University, Incheon, Korea.
41. Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea.
42. Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.